i went to change trans fluid. the fluid was real dark almost like oil. i got the new fluid in. when i put it into reverse the rpms jump up as if i would hit the throttle but i am holding the brake. this bogs the engine down and stalls out. i put it in reverse and let it go to see how fast it would go. it got up to alittle over 6 mph. i did have a 94 gasser with similar problems. it was the tps. i cant find anything like this on my truck now. i dont have engine light on. while cold going down the road i did see that the rpms would flux. it never done that before. it also feels like it has a slight stall going down the road. would this be the tps, vss,idle sensor or pedal sensor.

the truck is a 1996 2wd that has 235000 miles on it. it has a auto trans. i had it for 3 months maybe 4. i noticed the when i back out of the driveway and put it into drive that it would not go into drive. i have to drop it down to 1 to get it to move. it also was shifting hard. i had a mechanic to work on the truck. he said as far as the fluid goes it was real dirty. i checked the fluid and there was too much fluid. i changed the oil at 5000 miles. i changed the trans fluid sun which was almost at the 10000 mile mark since i had it. i also drained the torque converter. the trans was dark as oil. the magnet was totally covered. i have replace valve cover gaskets and all 4 pig tails. the idm is also been replaced. it was bought new from the dealership. it also has a new cam position sensor. the mechanic says either the truck has been chipped or it is a real strong running truck. i have asked on here to know if it has a chip. the response was that it was a good motor. the valley is clean. i recently notice a fuel leak on the top. the truck runs real quite compared to other trucks of that year range. you can stand right next to it to talk to someone without raising your voice to talk. i have notice when i turn the key there is a click noise. the mechanic says that i might have burned out couple glow plugs when the idm burned out.

when i looked the magnet it was almost inch thick covered. i never seen one like that before. i have heard that on a ford auto trans that if the fluid has not been changed before dont or the trans will go out shortly after that. is that true or just talk.

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